Question

What is the value of x when -3x + 7x = -12?
A) -3
B) -6/5
C) 3
D)4/7

Answer 1

The answer is A.) -3

Explanation:

x ( -3 + 7) = -12 use distributive property to factor out the x. So

x (4) = -12 add the like terms inside parenthesis

¼ * 4x = -12 *

1

4

multiply both side by the reciprocal of 4

x = -3 final answer

Answer 2

-3x + 7x = -12

You need to add like terms.

4x = -12

Then, you need to divide both side by 4.

x = -3

So the answer is:

A) x = -3